CN217383052U - Fume exhaust fan - Google Patents

Abstract

The application discloses range hood relates to kitchen electrical equipment technical field, can prolong oil smoke concentration detection device's life. The range hood of this application includes box, fan, oil smoke concentration detection device and controller. The box is equipped with air inlet and gas outlet, forms the wind channel between air inlet and the gas outlet. The fan is arranged in the air duct and comprises a main air suction opening, a secondary air suction opening and an air outlet. The air outlet is connected with the air outlet, a first exhaust channel is formed between the main air suction opening and the air inlet, and a second exhaust channel is formed between the secondary air suction opening and the air inlet. When the fan is started, the gas flow of the first exhaust channel is larger than that of the second exhaust channel. The oil smoke concentration detection device is arranged in the second exhaust channel. The controller is electrically connected with the fan and the oil smoke concentration detection device and used for adjusting the rotating speed of the fan according to the oil smoke concentration value acquired by the oil smoke concentration detection device. The range hood of the application is used for pumping away oil smoke from the upper part of a stove.

Description

Fume exhaust fan

Technical Field

The application relates to the technical field of kitchen electrical equipment, in particular to a range hood.

Background

The range hood is a kitchen appliance for purifying kitchen environment, is usually installed above a kitchen stove, and can rapidly exhaust waste gas generated by combustion of the kitchen stove and oil smoke harmful to human bodies generated in a cooking process and discharge the waste gas and the oil smoke out of a room, so that kitchen pollution is reduced, and kitchen air is purified.

The related art provides a range hood, which comprises a fan, an oil smoke concentration detection device and a controller. The controller can adjust the rotating speed of the fan according to the oil smoke concentration value obtained by the oil smoke concentration detection device, so that the rotating speed of the fan is matched with the oil smoke concentration, and the purpose of energy conservation is achieved. However, the oil smoke concentration detection device of the range hood in the related art is easy to damage and short in service life.

SUMMERY OF THE UTILITY MODEL

The application provides a range hood, can prolong oil smoke concentration detection device's life.

In order to achieve the purpose, the technical scheme is as follows:

the embodiment of the application provides a range hood, range hood includes box, fan, oil smoke concentration detection device and controller.

The box body is provided with an air inlet and an air outlet, and an air channel is formed between the air inlet and the air outlet. The fan set up in the wind channel, the fan includes main inlet scoop, inferior inlet scoop and air exit. The air exit with the gas outlet is connected, main inlet scoop with form first exhaust passage between the air inlet, inferior inlet scoop with form second exhaust passage between the air inlet. When the fan is started, the gas flow of the first exhaust channel is larger than that of the second exhaust channel. The oil smoke concentration detection device is arranged in the second exhaust channel. The controller is electrically connected with the fan and the oil smoke concentration detection device and used for adjusting the rotating speed of the fan according to the oil smoke concentration value acquired by the oil smoke concentration detection device.

In some embodiments, the blower includes a volute and a centrifugal fan. The spiral case is equipped with main inlet scoop, inferior inlet scoop with the air exit, main inlet scoop with the distance between the box is greater than inferior inlet scoop with the distance between the box. The centrifugal fan is disposed within the volute. The main inlet scoop with inferior inlet scoop set up relatively in centrifugal fan's axial air inlet side, the air exit set up in centrifugal fan's circumference. Wherein, follow centrifugal fan's axial, the air inlet is located the main inlet scoop of spiral case is kept away from one side of inferior inlet scoop, oil smoke concentration detection device is located the inferior inlet scoop of spiral case is kept away from one side of main inlet scoop.

In some embodiments, the enclosure includes a bottom panel, a top panel, and side panels. The top plate and the bottom plate are arranged oppositely, the air inlet is formed in the bottom plate, and the air outlet is formed in the top plate. The side plate is arranged between the bottom plate and the top plate and is fixedly connected with the bottom plate and the top plate to form the air duct. The oil smoke concentration detection device is arranged on one side, close to the bottom plate, of the top plate.

In some embodiments, the side panels include a first sub-side panel, a second sub-side panel, a third sub-side panel and a fourth sub-side panel connected to each other, the first sub-side panel is disposed opposite to the third sub-side panel, and the second sub-side panel is disposed opposite to the fourth sub-side panel; the third sub-side plate is arranged on one side, away from the main air suction opening, of the secondary air suction opening of the volute and is detachably connected with the second sub-side plate, the fourth sub-side plate, the top plate and the bottom plate.

In some embodiments, the soot concentration detection apparatus includes a housing and a sensor. The shell is provided with an oil smoke inlet and an oil smoke outlet, and the oil smoke inlet and the oil smoke outlet are arranged along the axial direction of the centrifugal fan. The sensor is arranged in the shell and used for detecting the concentration of the oil smoke.

In some embodiments, the housing is further provided with an air inlet. The range hood further comprises a ventilation pipe, a port of the first end of the ventilation pipe is connected with the air inlet, and a port of the second end of the ventilation pipe is connected to the outer side of the box body. Wherein the first end and the second end are opposite ends of the vent tube.

In some embodiments, the range hood further comprises a dust cover. The dustproof cover is arranged on one side, away from the bottom plate, of the top plate, and an air inlet is formed in the dustproof cover. And a dustproof cavity is formed between the dustproof cover and the top plate, and the port of the second end of the ventilation pipe is positioned in the dustproof cavity.

In some embodiments, the dust cover includes a top cover and a side cover. The direction of a port at the second end of the ventilating pipe is approximately vertical to the top cover, and the side cover is arranged around the edge of the top cover and is positioned on one side, close to the top plate, of the top cover. The air inlet is arranged on the side cover.

In some embodiments, the range hood further includes a mounting seat, the mounting seat is fixedly connected to the box, and the oil smoke concentration detection device is fixedly connected to the mounting seat.

In some embodiments, the box body comprises a bottom plate, a top plate and side plates, and the mounting seat comprises a mounting plate, a connecting plate and a limiting plate. The mounting panel with the roof sets up relatively, the connecting plate with the mounting panel with roof fixed connection. The limiting plate with the connecting plate encircles the edge setting of mounting panel, and is located the mounting panel is close to one side of roof. The oil smoke concentration detection device set up in the mounting panel is close to one side of roof, the limiting plate with the connecting plate is located oil smoke concentration detection device's week side.

The range hood provided by the embodiment of the disclosure comprises a box body, and a fan and an oil smoke concentration detection device which are arranged in the box body. The box is equipped with air inlet and gas outlet, and the fan includes main inlet scoop, inferior inlet scoop and air exit. The air outlet is connected with the air outlet, a first air exhaust channel is formed between the main air suction opening and the air inlet, and a second air exhaust channel is formed between the secondary air suction opening and the air inlet. When the fan is started, the gas flow of the first exhaust channel is larger than that of the second exhaust channel. On this basis, the oil smoke concentration detection device is arranged in the second exhaust passage. It can be understood that, when the range hood works, part of the oil smoke particles enter the oil smoke concentration detection device and are adsorbed on the electronic element of the oil smoke concentration detection device. Along with the extension of range hood operating time, the oil smoke granule of gathering in oil smoke concentration detection device can increase gradually, and oil smoke concentration detection device's detection precision can decline gradually, and life is shorter. In this application, through setting up oil smoke concentration detection device in the relatively less second exhaust passage of gas flow, can reduce the oil smoke granule that enters into in the oil smoke concentration detection device in the unit interval at range hood during operation to reduce the speed of gathering of oil smoke granule in oil smoke concentration detection device, prolong oil smoke concentration detection device's life.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a block diagram of a range hood provided in some embodiments of the present application;

fig. 2 is a structural diagram of the range hood with the third sub-side plate removed according to some embodiments of the present disclosure;

FIG. 3 is a cross-sectional view of the range hood shown in FIG. 2 with the third sub-side plate removed taken along section line A-A;

FIG. 4 is a block diagram of a wind turbine provided in some embodiments of the present application;

FIG. 5 is a block diagram of a wind turbine provided in some embodiments of the present application;

FIG. 6 is a block diagram of a housing provided in some embodiments of the present application;

FIG. 7 is a block diagram of a housing provided in some embodiments of the present application;

fig. 8 is a structural diagram of a lampblack concentration detection device provided in some embodiments of the present application;

fig. 9 is a structural diagram of an oil smoke concentration detection apparatus according to some embodiments of the present application;

fig. 10 is an enlarged view of a range hood provided in some embodiments of the present application at a smoke concentration detection device;

FIG. 11 is a block diagram of a dust cap provided in accordance with some embodiments of the present application;

FIG. 12 is a block diagram of a mount provided in some embodiments of the present application;

fig. 13 is an exploded view of a range hood provided in accordance with some embodiments of the present application;

fig. 14 is a structural diagram of a range hood according to some embodiments of the present application.

Reference numerals:

100-range hood; 1-a box body; 11-an air inlet; 12-gas outlet; 13-a base plate; 14-a top plate; 15-side plate; 151-first sub-side plate; 152-a second subplaterals; 153-a third subplaterals; 154-a fourth subplaterals; 2-a fan; 21-a main air suction opening; 22-secondary air suction openings; 23-an air outlet; 24-a volute; 25-centrifugal fan; 3-oil smoke concentration detection device; 31-a housing; 311-oil smoke inlet; 312-a fume outlet; 313-air inlet; 4-a ventilation pipe; 5, a dust cover; 51-an air inlet hole; 52-a top cover; 53-side cover; 6-mounting a base; 61-a mounting plate; 62-a connecting plate; 63-a limiting plate; 7-collecting the smoke hood; 8-decorating the cover; 81-a first decorative panel; 82-a second decorative panel; 83-third decorative panel.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

It should be noted that in practical applications, due to the limitation of the precision of the device or the installation error, the absolute parallel or perpendicular effect is difficult to achieve. In the present application, the description of "perpendicular", "parallel" or "same direction" is not an absolute limitation, but means that a perpendicular or parallel structural arrangement can be achieved within a preset error range, and a corresponding preset effect is achieved, so that the technical effect of limiting the features can be maximally achieved, and the corresponding technical scheme is convenient to implement and has high feasibility. For example, "perpendicular" includes absolute perpendicular and approximately perpendicular, where an acceptable deviation from approximately perpendicular may also be within 5 °, for example. "parallel" includes absolute parallel and approximately parallel, wherein an acceptable deviation from approximately parallel may also be, for example, within 5 °. "co-directional" includes absolute co-directional and approximately co-directional, where an acceptable range of deviation from approximately co-directional may also be within 5, for example.

In the description of the present application, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

With the improvement of living standard, people have higher pursuit for living quality, and have higher expectation for healthy and sanitary living environment. Various air purifying products are produced at the same time and are pursued by the market. Wherein, the range hood for purifying the kitchen air is widely applied.

The range hood, also called as smoke exhaust ventilator, is a kitchen appliance for purifying the kitchen environment. Generally, a range hood is installed above a cooking range in a kitchen, and can rapidly exhaust waste generated during combustion of the cooking range and oil smoke harmful to human bodies generated during cooking to a public flue or outdoors to reduce indoor air pollution and purify indoor air. The range hood can create a sanitary and healthy cooking environment for users, and has the safety guarantee effects of gas defense and explosion prevention.

Referring to fig. 1 and fig. 2, an embodiment of the present application provides a range hood 100, where the range hood 100 includes a box 1, a fan 2, a smoke concentration detection device 3, and a controller.

Wherein, the box 1 is equipped with air inlet 11 and gas outlet 12, forms the wind channel between air inlet 11 and the gas outlet 12, and fan 2 sets up in the wind channel. As shown in fig. 3 and 4, the blower 2 includes a main air suction opening 21, a sub air suction opening 22, and an air discharge opening 23. The air outlet 23 is connected with the air outlet 12, a first air exhaust channel is formed between the main air suction opening 21 and the air inlet 11, and a second air exhaust channel is formed between the secondary air suction opening 22 and the air inlet 11. When the fan 2 is started, the gas flow of the first exhaust passage is larger than the gas flow of the second exhaust passage. The oil smoke concentration detection device 3 is arranged in the second exhaust passage. The controller is electrically connected with the fan 2 and the oil smoke concentration detection device 3 and is used for adjusting the rotating speed of the fan 2 according to the oil smoke concentration value obtained by the oil smoke concentration detection device 3.

When the smoke concentration value acquired by the smoke concentration detector 3 is large, it indicates that much smoke is generated during cooking. At this time, the controller controls the fan 2 to rotate at a higher rotation speed to rapidly exhaust the oil smoke generated by cooking, so as to ensure that the range hood 100 has higher oil smoke exhaust efficiency. When the oil smoke concentration value obtained by the oil smoke concentration detection device 3 is smaller, it indicates that less oil smoke is generated during cooking. At this time, the controller may control the fan 2 to rotate at a lower rotation speed, so as to reduce the power consumption of the range hood 100 and reduce the energy waste while ensuring that the range hood 100 has a higher oil smoke extraction efficiency.

It will be appreciated that the air outlet 12 of the range hood 100 is typically in communication with a common flue or the outside. In this way, when the fan 2 works, the cooking fumes are introduced into the air duct through the air inlet 11 and finally discharged to the public flue or the outdoor through the air outlet 12, so as to purify the indoor air.

The range hood 100 provided by the embodiment of the present disclosure includes a box body 1, and a fan 2 and an oil smoke concentration detection device 3 which are arranged in the box body 1. The box body 1 is provided with an air inlet 11 and an air outlet 12, and the fan 2 comprises a main air suction opening 21, a secondary air suction opening 22 and an air outlet 23. Wherein, the air outlet 23 is connected with the air outlet 12, a first exhaust channel is formed between the main air inlet 21 and the air inlet 11, and a second exhaust channel is formed between the secondary air inlet 22 and the air inlet 11. When the fan 2 is started, the gas flow of the first exhaust passage is larger than the gas flow of the second exhaust passage. On this basis, the smoke concentration detection device 3 is provided in the second exhaust passage. It can be understood that, when the range hood 100 operates, a part of the oil smoke particles will enter the oil smoke concentration detection device 3 and be adsorbed on the electronic components of the oil smoke concentration detection device 3. With the extension of the operation time of the range hood 100, the oil smoke particles accumulated in the oil smoke concentration detection device 3 will gradually increase, the detection precision of the oil smoke concentration detection device 3 will gradually decrease, and the service life is short. In this application, through setting up oil smoke concentration detection device 3 in the relatively less second exhaust passage of gas flow, can reduce the oil smoke granule that enters into in oil smoke concentration detection device 3 in the unit interval at range hood 100 during operation to reduce the speed of gathering of oil smoke granule in oil smoke concentration detection device 3, prolong oil smoke concentration detection device 3's life.

In some embodiments, referring to fig. 4 and 5, the fan 2 is a centrifugal fan 2. Exemplarily, the fan 2 comprises a volute 24 and a centrifugal fan 25, the centrifugal fan 25 being arranged within the volute 24.

The volute 24 is provided with a main air suction opening 21, a secondary air suction opening 22 and an air outlet 23, and the distance between the main air suction opening 21 and the box body 1 is larger than the distance between the secondary air suction opening 22 and the box body 1. That is, the space between the main suction opening 21 and the inner wall of the case 1 is relatively large, and the space between the sub suction opening 22 and the inner wall of the case 1 is relatively small.

With this arrangement, the resistance of the airflow flowing to the main air suction opening 21 is relatively small, the airflow is smoother, and the cross-sectional area of the airflow channel corresponding to the main air suction opening 21 is larger.

Based on this, when the fan 2 is started, the gas flow at the primary air suction opening 21 will be larger than the gas flow at the secondary air suction opening 22.

On the basis, referring to fig. 3 and 5, the main air suction opening 21 and the sub air suction opening 22 are oppositely arranged on the axial air inlet side of the centrifugal fan 25, and the air outlet 23 is arranged on the circumferential direction of the centrifugal fan 25. Along the axial direction of the centrifugal fan 25, the air inlet 11 is located on one side of the main air inlet 21 of the volute 24, which is far away from the secondary air inlet 22, and the lampblack concentration detection device 3 is located on one side of the secondary air inlet 22 of the volute 24, which is far away from the main air inlet 21.

Arranged in this way, the distance between the primary air suction opening 21 and the air inlet 11 is relatively small, while the distance between the secondary air suction opening 22 and the air inlet 11 is relatively large. Thus, more soot entering the housing 1 through the inlet port 11 is sucked into the main suction port 21. Thus, the gas flow at the main air suction port is further increased, and the gas flow at the secondary air suction port is reduced. Based on this, the oil smoke concentration detection device 3 is disposed on the side of the secondary air suction opening 22 of the volute 24 away from the main air suction opening 21, so that oil smoke particles entering the oil smoke concentration detection device 3 in unit time can be reduced, the accumulation speed of the oil smoke particles in the oil smoke concentration detection device 3 is reduced, and the service life of the oil smoke concentration detection device 3 is prolonged.

In some embodiments, referring to fig. 6 and 7, the case 1 includes a bottom plate 13, a top plate 14, and side plates 15. The top plate 14 is disposed opposite to the bottom plate 13, the air inlet 11 is disposed on the bottom plate 13, and the air outlet 12 is disposed on the top plate 14. The side plates 15 are disposed between the bottom plate 13 and the top plate 14 and fixedly connected with the bottom plate 13 and the top plate 14 to form an air duct. That is, the air inlet 11 and the air outlet 12 are respectively provided at opposite ends of the case 1. In this way, the gas can flow more smoothly.

On this basis, referring to fig. 2, the smoke concentration detection device 3 is disposed on the top plate 14 on the side close to the bottom plate 13. It can be understood that, in the box 1 of the range hood 100, the closer to the air inlet 11, the greater the concentration of the oil smoke. Since the air inlet 11 is provided on the bottom plate 13 and the smoke concentration detection device 3 is provided on the top plate 14 facing the bottom plate 13, the distance between the smoke concentration detection device 3 and the air inlet 11 can be increased. Thus, when the range hood 100 is in operation, the amount of soot particles entering the soot concentration detection device 3 per unit time can be further reduced, thereby reducing the accumulation speed of the soot particles in the soot concentration detection device 3 and prolonging the service life of the soot concentration detection device 3.

It should be noted that the range hood 100 includes a circuit board for communicating with a power supply, and because the environment inside the range hood 100 is relatively harsh, the circuit board is usually disposed on a side of the top plate 14 away from the bottom plate 13, so as to reduce the influence of the oil smoke on the performance of the circuit board.

In this way, the lampblack concentration detection device 3 is arranged on one side of the top plate 14 close to the bottom plate 13, and the lampblack concentration detection device 3 is connected with the circuit board, so that the installation difficulty of the lampblack concentration detection device 3 can be reduced, and the installation efficiency of the lampblack concentration detection device 3 is improved.

Illustratively, the controller is disposed on the circuit board.

In some embodiments, referring to fig. 6 and 7, the side panel 15 includes a first sub-side panel 151, a second sub-side panel 152, a third sub-side panel 153, and a fourth sub-side panel 154 connected to each other, the first sub-side panel 151 is disposed opposite to the third sub-side panel 153, and the second sub-side panel 152 is disposed opposite to the fourth sub-side panel 154; the third sub-side plate 153 is disposed on a side of the sub-air inlet 22 of the volute 24 away from the main air inlet 21, and is detachably connected to the second sub-side plate 152, the fourth sub-side plate 154, the top plate 14 and the bottom plate 13.

With this arrangement, when the oil smoke concentration detection device 3 is abnormal, the third sub-side plate 153 is detached to repair or replace the oil smoke concentration detection device 3. This operation process is simple, can reduce the degree of difficulty of 3 maintenance and changes of oil smoke concentration detection device, improves the efficiency of 3 maintenance and changes of oil smoke concentration detection device. Like this, be favorable to reducing the cost of labor to reduce the maintenance cost in 3 anabatics of oil smoke concentration detection device.

It is understood that there are various implementations of the detachable connection of the third sub-side plate 153 with the second sub-side plate 152, the fourth sub-side plate 154, the top plate 14 and the bottom plate 13, which can be selected according to practical situations, and the disclosure is not limited in this respect.

Illustratively, the third sub-side plate 153 has a first threaded hole, and the second sub-side plate 152, the fourth sub-side plate 154, the top plate 14 and the bottom plate 13 have a second threaded hole at a position corresponding to the first threaded hole. On this basis, the range hood 100 further includes screws, and the screws sequentially pass through the first threaded holes and the second threaded holes to fixedly connect the third sub-side plate 153 with the second sub-side plate 152, the fourth sub-side plate 154, the top plate 14, and the bottom plate 13. Or, the third sub-side plate 153 is provided with a buckle, the second sub-side plate 152, the fourth sub-side plate 154, the top plate 14 and the bottom plate 13 are provided with a buckle hole at a position corresponding to the buckle, and the third sub-side plate 153 is fixedly connected with the second sub-side plate 152, the fourth sub-side plate 154, the top plate 14 and the bottom plate 13 by correspondingly clamping the buckle into the buckle hole. The specific choice may be made according to the actual situation, and the disclosure is not limited specifically herein.

In some embodiments, referring to fig. 8 and 9, the smoke concentration detection apparatus 3 includes a housing 31 and a sensor. The housing 31 is provided with a smoke inlet 311 and a smoke outlet 312, and the smoke inlet 311 and the smoke outlet 312 are arranged along the axial direction of the centrifugal fan 25. The sensor is disposed in the housing 31 and is used for detecting the oil smoke concentration.

Illustratively, the sensor is an infrared reflective sensor.

The oil smoke inlet 311 and the oil smoke outlet 312 are axially disposed along the centrifugal fan 25, so that the airflow can flow more smoothly in the oil smoke concentration detection device 3, thereby reducing the oil smoke particles accumulated in the oil smoke concentration detection device 3. In this way, the accumulation speed of the oil smoke particles in the oil smoke concentration detection device 3 can be reduced, and the service life of the oil smoke concentration detection device 3 can be prolonged.

In some embodiments, referring to fig. 9 and 10, an air inlet 313 is also provided on the housing 31. The range hood 100 further comprises a ventilation pipe 4, wherein a port of a first end of the ventilation pipe 4 is connected with the air inlet 313, and a port of a second end of the ventilation pipe 4 is connected to the outer side of the box body 1. Wherein the first end and the second end are opposite ends of the vent tube 4.

With this arrangement, when the range hood 100 is in operation, clean air outside the box 1 is introduced into the housing 31 through the ventilation pipe 4 under the action of the fan 2, so as to purify air in the oil smoke concentration detection device 3. Thus, the oil smoke concentration in the oil smoke concentration detection device 3 can be reduced, the accumulation speed of oil smoke particles in the oil smoke concentration detection device 3 is further reduced, and the service life of the oil smoke concentration detection device 3 is prolonged.

In some embodiments, referring to fig. 10 and 11, range hood 100 further includes a dust cover 5. The dust cover 5 is arranged on one side of the top plate 14 far away from the bottom plate 13, and an air inlet hole 51 is arranged on the dust cover 5. A dustproof cavity is formed between the dustproof cover 5 and the top plate 14, and the port of the second end of the ventilation pipe 4 is positioned in the dustproof cavity. Through setting up shield 5, can prevent that the dust from getting into in oil smoke concentration detection device 3 through ventilation pipe 4, causing the influence to oil smoke concentration detection device 3's performance. Thus, the detection accuracy of the oil smoke concentration detection device 3 can be improved, and the service life of the oil smoke concentration detection device 3 can be prolonged.

It should be noted that the air inlet 51 may be disposed on the upper side of the dust cover 5, or may be disposed on the peripheral side of the dust cover 5, which may be selected according to the actual situation, and the disclosure does not specifically limit this.

Illustratively, referring to fig. 11, the dust cover 5 includes a top cover 52 and side covers 53. The port at the second end of the ventilation tube 4 is oriented substantially perpendicular to the top cover 52, and a side cover 53 is provided around the edge of the top cover 52 and on the side of the top cover 52 adjacent to the top panel 14. Wherein, the intake hole 51 is disposed on the side cover 53.

Arranged in this way, the top cover 52 can block the port of the second end of the ventilation tube 4, thereby preventing dust in the air from falling through the air inlet holes 51 into the port of the second end of the ventilation tube 4 under the action of gravity. In this way, the dust entering the smoke concentration detection device 3 can be reduced, the detection accuracy of the smoke concentration detection device 3 can be improved, and the service life of the smoke concentration detection device 3 can be prolonged.

In some embodiments, referring to figure 11, the diameter of the inlet holes 51 is smaller than the diameter of the port at the second end of the vent tube 4. Thus, the air inlet hole 51 can play a certain filtering role, so that the air entering the lampblack concentration detection device 3 is cleaner. So, be favorable to purifying the air in the oil smoke concentration detection device 3, can improve purifying effect to extension oil smoke concentration detection device 3's life.

In some embodiments, referring to fig. 12, the range hood 100 further includes a mounting base 6, the mounting base 6 is fixedly connected with the box 1, and the smoke concentration detection device 3 is fixedly connected with the mounting base 6. Through setting up mount pad 6, be favorable to the dismantlement and the installation of oil smoke concentration detection device 3.

The implementation manner of the fixed connection between the mounting seat 6 and the box body 1 is various, and the implementation manner can be specifically selected according to actual situations, and the disclosure is not specifically limited herein.

Exemplarily, a third threaded hole is formed in the mounting seat 6, and a fourth threaded hole is formed in the box body 1 at a position corresponding to the third threaded hole. The screw passes third screw hole and fourth screw hole in proper order to with mount pad 6 and box 1 fixed connection. Or, be equipped with the buckle on the mount pad 6, be equipped with the card hole with the position that the buckle corresponds on the box 1, correspond the card through with the buckle and go into the card downthehole to with mount pad 6 and box 1 fixed connection. The specific choice can be made according to the actual situation, and the disclosure does not specifically limit this.

In some embodiments, referring to fig. 12, mount 6 includes a mounting plate 61, a connecting plate 62, and a limit plate 63. The mounting plate 61 is disposed opposite to the top plate 14, and the connecting plate 62 is fixedly connected to the mounting plate 61 and the top plate 14. The stopper plate 63 and the connecting plate 62 are disposed around the edge of the mounting plate 61 and on the side of the mounting plate 61 close to the top plate 14. The soot concentration detection device 3 is provided on the mounting plate 61 on the side close to the top plate 14, and the stopper plate 63 and the connection plate 62 are located on the periphery side of the soot concentration detection device 3.

Arranged in this way, the mounting plate 61 can function to support the lampblack concentration detection device 3, and the lampblack concentration detection device 3 is limited between the mounting plate 61 and the top plate 14, so that the lampblack concentration detection device 3 is prevented from moving away from the top plate 14; the stopper plate 63 and the connecting plate 62 can prevent the smoke concentration detection apparatus 3 from moving in a direction parallel to the mounting plate 61. Thus, the reliability of installation of the oil smoke concentration detection device 3 can be improved.

In some embodiments, referring to fig. 13, the range hood 100 further includes a smoke collecting hood 7, and the smoke collecting hood 7 is provided with an air inlet and an air outlet. Wherein, the air outlet is connected with the air inlet 11 of the box body 1. Through setting up and holding together petticoat pipe 7, can improve range hood 100 hold together the cigarette effect, reduce the risk of oil smoke loss, improve range hood 100's oil absorption cigarette effect, promote user's use and experience.

In some embodiments, referring to fig. 13 and 14, the range hood 100 further includes a decorative cover 8, and the decorative cover 8 is disposed on a side of the smoke collecting hood 7 close to the box body 1. The trim cover 8 includes a first trim panel 81, a second trim panel 82, and a third trim panel 83, and the first trim panel 81 and the third trim panel 83 are provided at opposite ends of the second trim panel 82. The first decorative plate 81 is located on the side of the second sub-side plate 152 far from the fourth sub-side plate 154, the second decorative plate 82 is located on the side of the third sub-side plate 153 far from the first sub-side plate 151, and the third decorative plate 83 is located on the side of the fourth sub-side plate 154 far from the second sub-side plate 152.

With this kind of mode setting, can improve range hood 100's pleasing to the eye degree to improve user's use experience.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A range hood, comprising:

the air inlet and the air outlet form an air duct;

the fan is arranged in the air duct; the fan comprises a main air suction opening, a secondary air suction opening and an air outlet, the air outlet is connected with the air outlet, a first exhaust channel is formed between the main air suction opening and the air inlet, and a second exhaust channel is formed between the secondary air suction opening and the air inlet; when the fan is started, the gas flow of the first exhaust channel is larger than that of the second exhaust channel;

the oil smoke concentration detection device is arranged in the second exhaust channel;

and the controller is electrically connected with the fan and the oil smoke concentration detection device and used for adjusting the rotating speed of the fan according to the oil smoke concentration value acquired by the oil smoke concentration detection device.

2. The range hood of claim 1, wherein the fan comprises:

the volute is provided with the main air suction opening, the secondary air suction opening and the air outlet, and the distance between the main air suction opening and the box body is larger than the distance between the secondary air suction opening and the box body;

a centrifugal fan disposed within the volute; the main air suction opening and the secondary air suction opening are oppositely arranged on the axial air inlet side of the centrifugal fan, and the air outlet is arranged in the circumferential direction of the centrifugal fan;

wherein, follow centrifugal fan's axial, the air inlet is located the main inlet scoop of spiral case is kept away from one side of inferior inlet scoop, oil smoke concentration detection device is located the inferior inlet scoop of spiral case is kept away from one side of main inlet scoop.

3. The range hood of claim 2, wherein the cabinet comprises:

the air inlet is arranged on the bottom plate;

the top plate is arranged opposite to the bottom plate, and the air outlet is arranged on the top plate;

the side plate is arranged between the bottom plate and the top plate and is fixedly connected with the bottom plate and the top plate to form the air duct;

the oil smoke concentration detection device is arranged on one side, close to the bottom plate, of the top plate.

4. The range hood of claim 3, wherein the side plates comprise a first sub-side plate, a second sub-side plate, a third sub-side plate and a fourth sub-side plate which are connected with each other, the first sub-side plate and the third sub-side plate are arranged oppositely, and the second sub-side plate and the fourth sub-side plate are arranged oppositely; the third sub-side plate is arranged on one side, away from the main air suction opening, of the secondary air suction opening of the volute and is detachably connected with the second sub-side plate, the fourth sub-side plate, the top plate and the bottom plate.

5. The range hood of claim 4, wherein the soot concentration detecting device comprises:

the shell is provided with an oil smoke inlet and an oil smoke outlet, and the oil smoke inlet and the oil smoke outlet are arranged along the axial direction of the centrifugal fan;

and the sensor is arranged in the shell and is used for detecting the concentration of the oil smoke.

6. The range hood of claim 5, wherein the housing further comprises an air inlet;

the range hood also comprises a ventilation pipe, wherein a port at the first end of the ventilation pipe is connected with the air inlet, and a port at the second end of the ventilation pipe is connected to the outer side of the box body; the first end and the second end are opposite ends of the vent tube.

7. The range hood of claim 6, further comprising:

the dustproof cover is arranged on one side, away from the bottom plate, of the top plate, and an air inlet hole is formed in the dustproof cover; a dustproof cavity is formed between the dustproof cover and the top plate; and the port of the second end of the ventilation pipe is positioned in the dustproof cavity.

8. The range hood of claim 7, wherein the dust cover comprises:

a top cover, the port of the second end of the vent tube oriented substantially perpendicular to the top cover;

the side cover is arranged around the edge of the top cover and is positioned on one side, close to the top plate, of the top cover; the air inlet is arranged on the side cover.

9. The range hood of any one of claims 1 to 8, further comprising:

the mounting seat is fixedly connected with the box body; the oil smoke concentration detection device is fixedly connected with the mounting seat.

10. The range hood of claim 9, wherein the housing includes a bottom plate, a top plate, and side plates, and the mount includes:

the mounting plate is arranged opposite to the top plate;

the connecting plate is fixedly connected with the mounting plate and the top plate;

the limiting plate and the connecting plate are arranged around the edge of the mounting plate and are positioned on one side, close to the top plate, of the mounting plate; the oil smoke concentration detection device set up in the mounting panel is close to one side of roof, the limiting plate with the connecting plate is located oil smoke concentration detection device's week side.

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